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Precautions for stainless steel electropolishing production line

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2022-08-12 09:29

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Precautions for stainless steel electropolishing production line
1. The polishing liquid will produce foam during electropolishing in the initial stage of its use, so the distance between the liquid surface of the polishing liquid and the top of the polishing tank should not be less than or equal to 15cm.
2. The water remaining on the surface of the workpiece should be removed as much as possible before the stainless steel workpiece enters the polishing tank. Excessive water entrained in the workpiece may cause serious pitting on the polishing surface and local corrosion, resulting in the workpiece being scrapped.
3. In the process of electrolytic polishing, the iron and chromium elements contained in the stainless steel workpiece as the anode are continuously converted into metal ions and dissolved in the polishing solution without depositing on the surface of the cathode. With the progress of the polishing process, the concentration of metal ions increases continuously. When a certain value is reached, these metal ions are continuously precipitated from the polishing liquid in the form of phosphate and sulfate, and settle at the bottom of the polishing tank. For this reason, the polishing solution must be regularly filtered to remove these solid deposits.
4. During the operation of the polishing tank, in addition to the continuous consumption of phosphoric acid and sulfuric acid, water is lost due to evaporation and electrolysis. In addition, the high-viscosity polishing liquid is continuously entrained and lost by the workpiece, and the liquid level of the polishing liquid continues to drop, so it is necessary to replenish the polishing tank frequently. Fresh polishing fluid and water.

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